Understood. But, that was several years earlier. He seemed to be fighting on another level for the last 3-5 years before his brain injury.
McClellan was always the sort fighter who could easily be outboxed and exposed when taken into deep waters.
Here's one... Adrien Broner At one point in time, He was deemed to be The Next Floyd Mayweather... Then he ran into Marcos Maidana... And Adrien hasn't been the same since.